feat: rename keep-notes to memento-note, migrate to PostgreSQL, fix MCP bugs

- Rename directory keep-notes -> memento-note with all code references
- Prisma: SQLite -> PostgreSQL (both app and MCP server schemas)
- Sync MCP schema with main app (add missing fields, relations, indexes)
- Delete 17 SQLite migrations (clean slate for PostgreSQL)
- Remove SQLite dependencies (@libsql/client, better-sqlite3, etc.)
- Fix MCP server: hardcoded Windows DB paths -> DATABASE_URL env var
- Fix MCP server: .dockerignore excluded index-sse.js (SSE mode broken)
- MCP Dockerfile: node:20 -> node:22
- Docker Compose: add postgres service, remove SQLite volume
- Generate favicon.ico, icon-192.png, icon-512.png, apple-icon.png
- Update layout.tsx icons and manifest.json for PNG icons
- Update all .env files for PostgreSQL
- Rewrite README.md with updated sections
- Remove mcp-server/node_modules and prisma/client-generated from git tracking

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

memento-note/hooks/use-auto-label-suggestion.ts

@@ -0,0 +1,62 @@
+import { useState, useEffect } from 'react'
+import { useSearchParams } from 'next/navigation'
+import { useSession } from 'next-auth/react'
+
+/**
+ * Hook to check if auto label suggestions should be shown for the current notebook
+ * Triggers when notebook has 15+ notes (IA4)
+ */
+export function useAutoLabelSuggestion() {
+  const { data: session } = useSession()
+  const searchParams = useSearchParams()
+  const [shouldSuggest, setShouldSuggest] = useState(false)
+  const [notebookId, setNotebookId] = useState<string | null>(searchParams.get('notebook'))
+  const [hasChecked, setHasChecked] = useState(false)
+
+  useEffect(() => {
+    const currentNotebookId = searchParams.get('notebook')
+
+    // Reset when notebook changes
+    if (currentNotebookId !== notebookId) {
+      setNotebookId(currentNotebookId)
+      setHasChecked(false)
+      setShouldSuggest(false)
+
+      // Check if we should suggest labels for this notebook
+      if (currentNotebookId && session?.user?.id) {
+        checkNotebookForSuggestions(currentNotebookId)
+      }
+    }
+  }, [searchParams, notebookId, session])
+
+  const checkNotebookForSuggestions = async (nbId: string) => {
+    try {
+      // Check if notebook has 15+ notes
+      const response = await fetch('/api/ai/auto-labels', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        credentials: 'include',
+        body: JSON.stringify({ notebookId: nbId }),
+      })
+
+      const data = await response.json()
+
+      // Show suggestions if available
+      if (data.success && data.data) {
+        setShouldSuggest(true)
+      }
+
+      setHasChecked(true)
+    } catch (error) {
+      console.error('Failed to check for label suggestions:', error)
+      setHasChecked(true)
+    }
+  }
+
+  return {
+    shouldSuggest,
+    notebookId,
+    hasChecked,
+    dismiss: () => setShouldSuggest(false),
+  }
+}

memento-note/hooks/use-auto-tagging.ts

@@ -0,0 +1,94 @@
+import { useState, useEffect, useRef } from 'react';
+import { useDebounce } from './use-debounce';
+import { TagSuggestion } from '@/lib/ai/types';
+
+interface UseAutoTaggingProps {
+  content: string;
+  notebookId?: string | null;
+  enabled?: boolean;
+}
+
+export function useAutoTagging({ content, notebookId, enabled = true }: UseAutoTaggingProps) {
+  const [suggestions, setSuggestions] = useState<TagSuggestion[]>([]);
+  const [isAnalyzing, setIsAnalyzing] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  // Debounce le contenu de 1.5s
+  const debouncedContent = useDebounce(content, 1500);
+
+  // Track previous notebookId to detect when note is moved to a notebook
+  const previousNotebookId = useRef<string | null | undefined>(notebookId);
+
+  const analyzeContent = async (contentToAnalyze: string) => {
+    // CRITICAL: Don't suggest labels in "Notes générales" (notebookId is null)
+    // Labels should ONLY appear within notebooks, not in the general notes section
+    if (!notebookId) {
+      setSuggestions([]);
+      return;
+    }
+
+    if (!contentToAnalyze || contentToAnalyze.length < 10) {
+      setSuggestions([]);
+      return;
+    }
+
+    setIsAnalyzing(true);
+    setError(null);
+
+    try {
+      const response = await fetch('/api/ai/tags', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          content: contentToAnalyze,
+          notebookId: notebookId || undefined,
+          language: document.documentElement.lang || 'en',
+        }),
+      });
+
+      if (!response.ok) {
+        throw new Error('Erreur lors de l\'analyse');
+      }
+
+      const data = await response.json();
+      setSuggestions(data.tags || []);
+    } catch (err) {
+      setError('Impossible de générer des suggestions');
+    } finally {
+      setIsAnalyzing(false);
+    }
+  };
+
+  // Trigger on content change
+  useEffect(() => {
+    if (!enabled) {
+      setSuggestions([]);
+      return;
+    }
+
+    analyzeContent(debouncedContent);
+  }, [debouncedContent, enabled]);
+
+  // CRITICAL: Also trigger when notebookId changes from null/undefined to a value (note moved to notebook)
+  useEffect(() => {
+    if (!enabled) return;
+
+    const prev = previousNotebookId.current;
+    previousNotebookId.current = notebookId;
+
+    // Detect when note is moved FROM "Notes générales" (null) TO a notebook
+    const wasMovedToNotebook = (prev === null || prev === undefined) && notebookId;
+
+    if (wasMovedToNotebook && content && content.length >= 10) {
+      // Use current content immediately (no debounce) when moving to notebook
+      analyzeContent(content);
+    }
+  }, [notebookId, content, enabled]);
+
+  return {
+    suggestions,
+    isAnalyzing,
+    error,
+    clearSuggestions: () => setSuggestions([]),
+  };
+}

memento-note/hooks/use-connections-compare.ts

@@ -0,0 +1,44 @@
+'use client'
+
+import { useState, useEffect } from 'react'
+import { getNoteById } from '@/app/actions/notes'
+import { Note } from '@/lib/types'
+
+export function useConnectionsCompare(noteIds: string[] | null) {
+  const [notes, setNotes] = useState<Note[]>([])
+  const [isLoading, setIsLoading] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+
+  useEffect(() => {
+    // Early return if no noteIds or empty array
+    if (!noteIds || noteIds.length === 0) {
+      setNotes([])
+      return
+    }
+
+    const fetchNotes = async () => {
+      setIsLoading(true)
+      setError(null)
+
+      try {
+        const fetchedNotes = await Promise.all(
+          noteIds.map(id => getNoteById(id))
+        )
+
+        // Filter out null/undefined notes
+        const validNotes = fetchedNotes.filter((note): note is Note => note !== null && note !== undefined)
+
+        setNotes(validNotes)
+      } catch (err) {
+        console.error('[useConnectionsCompare] Failed to fetch notes:', err)
+        setError('Failed to load notes')
+      } finally {
+        setIsLoading(false)
+      }
+    }
+
+    fetchNotes()
+  }, [noteIds])
+
+  return { notes, isLoading, error }
+}

memento-note/hooks/use-debounce.ts

@@ -0,0 +1,17 @@
+import { useEffect, useState } from 'react';
+
+export function useDebounce<T>(value: T, delay: number): T {
+  const [debouncedValue, setDebouncedValue] = useState<T>(value);
+
+  useEffect(() => {
+    const timer = setTimeout(() => {
+      setDebouncedValue(value);
+    }, delay);
+
+    return () => {
+      clearTimeout(timer);
+    };
+  }, [value, delay]);
+
+  return debouncedValue;
+}

memento-note/hooks/use-note-drag.ts

@@ -0,0 +1,36 @@
+'use client'
+
+import { useState, useCallback } from 'react'
+
+export type DragState = 'idle' | 'dragging' | 'drag-over'
+
+export function useNoteDrag() {
+  const [draggedNoteId, setDraggedNoteId] = useState<string | null>(null)
+  const [dragOverNotebookId, setDragOverNotebookId] = useState<string | null>(null)
+
+  const startDrag = useCallback((noteId: string) => {
+    setDraggedNoteId(noteId)
+  }, [])
+
+  const endDrag = useCallback(() => {
+    setDraggedNoteId(null)
+    setDragOverNotebookId(null)
+  }, [])
+
+  const dragOver = useCallback((notebookId: string | null) => {
+    setDragOverNotebookId(notebookId)
+  }, [])
+
+  const isDragging = draggedNoteId !== null
+  const isDragOver = dragOverNotebookId !== null
+
+  return {
+    draggedNoteId,
+    dragOverNotebookId,
+    startDrag,
+    endDrag,
+    dragOver,
+    isDragging,
+    isDragOver,
+  }
+}

memento-note/hooks/use-reminder-check.ts

@@ -0,0 +1,44 @@
+'use client';
+
+import { useState, useEffect } from 'react';
+import { Note } from '@/lib/types';
+import { toast } from 'sonner';
+
+export function useReminderCheck(notes: Note[]) {
+  const [notifiedReminders, setNotifiedReminders] = useState<Set<string>>(new Set());
+
+  useEffect(() => {
+    const checkReminders = () => {
+      const now = new Date();
+      const dueReminders: string[] = [];
+
+      // First pass: collect which reminders are due
+      notes.forEach(note => {
+        if (!note.reminder) return;
+        const reminderDate = new Date(note.reminder);
+
+        if (reminderDate <= now && !notifiedReminders.has(note.id)) {
+          dueReminders.push(note.id);
+          toast.info("🔔 Reminder: " + (note.title || "Untitled Note"));
+        }
+      });
+
+      // Second pass: update state only once with all due reminders
+      if (dueReminders.length > 0) {
+        setNotifiedReminders(prev => {
+          const newSet = new Set(prev);
+          dueReminders.forEach(id => newSet.add(id));
+          return newSet;
+        });
+      }
+    };
+
+    // Check immediately
+    checkReminders();
+
+    // Then check every 30 seconds
+    const interval = setInterval(checkReminders, 30000);
+
+    return () => clearInterval(interval);
+  }, [notes]);
+}

memento-note/hooks/use-resize-observer.ts

@@ -0,0 +1,33 @@
+'use client';
+
+import { useEffect, useRef } from 'react';
+
+export function useResizeObserver(callback: (entry: ResizeObserverEntry) => void) {
+  const ref = useRef<HTMLElement>(null);
+  const frameId = useRef<number>(0);
+
+  useEffect(() => {
+    const element = ref.current;
+    if (!element) return;
+
+    const observer = new ResizeObserver((entries) => {
+      // Cancel previous frame to avoid stacking updates
+      if (frameId.current) cancelAnimationFrame(frameId.current);
+      
+      frameId.current = requestAnimationFrame(() => {
+        for (const entry of entries) {
+          callback(entry);
+        }
+      });
+    });
+
+    observer.observe(element);
+
+    return () => {
+      observer.disconnect();
+      if (frameId.current) cancelAnimationFrame(frameId.current);
+    };
+  }, [callback]);
+
+  return ref;
+}

memento-note/hooks/use-title-suggestions.ts

@@ -0,0 +1,74 @@
+import { useState, useEffect } from 'react'
+import { useDebounce } from './use-debounce'
+
+export interface TitleSuggestion {
+  title: string
+  confidence: number
+  reasoning?: string
+}
+
+interface UseTitleSuggestionsProps {
+  content: string
+  enabled?: boolean
+}
+
+export function useTitleSuggestions({ content, enabled = true }: UseTitleSuggestionsProps) {
+  const [suggestions, setSuggestions] = useState<TitleSuggestion[]>([])
+  const [isAnalyzing, setIsAnalyzing] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+
+  // Debounce le contenu de 2s pour éviter trop d'appels
+  const debouncedContent = useDebounce(content, 2000)
+
+  useEffect(() => {
+    if (!enabled || !debouncedContent) {
+      setSuggestions([])
+      return
+    }
+
+    const wordCount = debouncedContent.split(/\s+/).length
+
+    // Il faut au moins 10 mots
+    if (wordCount < 10) {
+      setSuggestions([])
+      return
+    }
+
+
+    const generateTitles = async () => {
+      setIsAnalyzing(true)
+      setError(null)
+
+      try {
+        const response = await fetch('/api/ai/title-suggestions', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ content: debouncedContent }),
+        })
+
+
+        if (!response.ok) {
+          const errorData = await response.json()
+          throw new Error(errorData.error || 'Erreur lors de la génération des titres')
+        }
+
+        const data = await response.json()
+        setSuggestions(data.suggestions || [])
+      } catch (err) {
+        console.error('❌ Title suggestions error:', err)
+        setError('Impossible de générer des suggestions de titres')
+      } finally {
+        setIsAnalyzing(false)
+      }
+    }
+
+    generateTitles()
+  }, [debouncedContent, enabled])
+
+  return {
+    suggestions,
+    isAnalyzing,
+    error,
+    clearSuggestions: () => setSuggestions([])
+  }
+}

memento-note/hooks/useUndoRedo.ts

@@ -0,0 +1,115 @@
+import { useState, useCallback, useRef } from 'react'
+
+export interface UndoRedoState<T> {
+  past: T[]
+  present: T
+  future: T[]
+}
+
+interface UseUndoRedoReturn<T> {
+  state: T
+  setState: (newState: T | ((prev: T) => T)) => void
+  undo: () => void
+  redo: () => void
+  canUndo: boolean
+  canRedo: boolean
+  clear: () => void
+}
+
+const MAX_HISTORY_SIZE = 50
+
+export function useUndoRedo<T>(initialState: T): UseUndoRedoReturn<T> {
+  const [history, setHistory] = useState<UndoRedoState<T>>({
+    past: [],
+    present: initialState,
+    future: [],
+  })
+  
+  // Track if we're in an undo/redo operation to prevent adding to history
+  const isUndoRedoAction = useRef(false)
+
+  const setState = useCallback((newState: T | ((prev: T) => T)) => {
+    // Skip if this is an undo/redo action
+    if (isUndoRedoAction.current) {
+      isUndoRedoAction.current = false
+      return
+    }
+
+    setHistory((currentHistory) => {
+      const resolvedNewState =
+        typeof newState === 'function'
+          ? (newState as (prev: T) => T)(currentHistory.present)
+          : newState
+
+      // Don't add to history if state hasn't changed
+      if (JSON.stringify(resolvedNewState) === JSON.stringify(currentHistory.present)) {
+        return currentHistory
+      }
+
+      const newPast = [...currentHistory.past, currentHistory.present]
+      
+      // Limit history size
+      if (newPast.length > MAX_HISTORY_SIZE) {
+        newPast.shift()
+      }
+
+      return {
+        past: newPast,
+        present: resolvedNewState,
+        future: [], // Clear future on new action
+      }
+    })
+  }, [])
+
+  const undo = useCallback(() => {
+    setHistory((currentHistory) => {
+      if (currentHistory.past.length === 0) return currentHistory
+
+      const previous = currentHistory.past[currentHistory.past.length - 1]
+      const newPast = currentHistory.past.slice(0, currentHistory.past.length - 1)
+
+      isUndoRedoAction.current = true
+
+      return {
+        past: newPast,
+        present: previous,
+        future: [currentHistory.present, ...currentHistory.future],
+      }
+    })
+  }, [])
+
+  const redo = useCallback(() => {
+    setHistory((currentHistory) => {
+      if (currentHistory.future.length === 0) return currentHistory
+
+      const next = currentHistory.future[0]
+      const newFuture = currentHistory.future.slice(1)
+
+      isUndoRedoAction.current = true
+
+      return {
+        past: [...currentHistory.past, currentHistory.present],
+        present: next,
+        future: newFuture,
+      }
+    })
+  }, [])
+
+  const clear = useCallback(() => {
+    setHistory({
+      past: [],
+      present: initialState,
+      future: [],
+    })
+  }, [initialState])
+
+  return {
+    state: history.present,
+    setState,
+    undo,
+    redo,
+    canUndo: history.past.length > 0,
+    canRedo: history.future.length > 0,
+    clear,
+  }
+}